oj.uz

Submission #372371

# Submission time Handle Problem Language Result Execution time Memory
372371 2021-02-27T22:03:41 Z crackersamdjam Fire (JOI20_ho_t5) C++17
8 / 100
 1000 ms 50844 KB 
#ifndef LOCAL
#pragma GCC optimize("O3")
#pragma GCC target("sse4")
#endif

#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()

using namespace std;
using ll = long long;
const int MM = 2e5+5, NN = 400, SZ = 600, LOG = 18;

struct query{
	int t, l, r, id;
	bool operator<(const query &o) const{
		return t < o.t;
	}
} q[MM];

int n, qs;
ll a[MM], ans[MM], sp[LOG][MM];

ll qu(int l, int r){
	int k = __lg(r-l+1);
	return max(sp[k][l], sp[k][r-(1<<k)+1]);
}

stack<pair<int, ll>> st;
vector<pair<int, ll>> slope[NN];
ll curslope[NN], cursum[NN];
//at time i, slope changes by x
//changes sum by something

int ls[MM], rs[MM];
//rs how far will cover
//ls how far until covered

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	memset(ls, -0x3f, sizeof ls);
	cin>>n>>qs;

	for(int i = 1; i <= n; i++){
		cin>>a[i];
		sp[0][i] = a[i];
		while(size(st) and st.top().second <= a[i]){
			auto [j, v] = st.top();
			st.pop();
			rs[j] = i;
		}

		if(size(st)){
			auto [j, v] = st.top();
			ls[i] = j;
		}

		st.emplace(i, a[i]);
	}

	while(size(st)){
		auto [j, v] = st.top();
		st.pop();
		rs[j] = n+1;
	}

	for(int i = 1; i <= n; i++){
		//this one overwrites
		int id = i/SZ;
		int rid = rs[i]/SZ;

		slope[id].emplace_back(i-i, a[i]);
		slope[rid].emplace_back(rs[i]-i, -a[i]);
		for(int j = id; j <= rid; j++){
			if(j != id)
				slope[j].emplace_back(j*SZ-i, a[i]);
			
			if(j != rid)
				slope[j].emplace_back(j*SZ+SZ-i, -a[i]);
		}

		//when another starts to cover a[i]
		//and when it ends covering a[i]
		// i-ls[i] to rs[i]-ls[i]

		slope[id].emplace_back(i-ls[i], -a[i]);
		slope[rid].emplace_back(rs[i]-ls[i], a[i]);
		for(int j = id; j <= rid; j++){
			if(j != id)
				slope[j].emplace_back(j*SZ-ls[i], -a[i]);
			
			if(j != rid)
				slope[j].emplace_back(j*SZ+SZ-ls[i], a[i]);
		}
	}

	for(int k = 1; k <= __lg(n); k++){	
		for(int i = 1; i+(1<<k)-1 <= n; i++){
			sp[k][i] = max(sp[k-1][i], sp[k-1][i+(1<<(k-1))]);
		}
	}

	for(int i = 0; i <= n/SZ; i++){
		sort(all(slope[i]), greater<pair<int, ll>>());
	}
	
	for(int i = 0; i < qs; i++){
		cin>>q[i].t>>q[i].l>>q[i].r;
		q[i].id = i;
	}
	sort(q, q+qs);
	int t = -1;
	for(int tt = 0; tt < qs; tt++){
		auto [nt, l, r, qi] = q[tt];

		for(int j = t+1; j <= nt; j++){
			for(int i = 0; i <= n/SZ; i++){
				while(size(slope[i]) and slope[i].back().first <= j){
					curslope[i] += slope[i].back().second;
					slope[i].pop_back();
				}
				cursum[i] += curslope[i];
			}
		}
		t = nt;

		r++;
		int li = ((l+SZ-1)/SZ), ri = ((r)/SZ);

		if(li >= ri){
			for(int i = l; i < r; i++)
				ans[qi] += qu(max(1, i-t), i);
		}
		else{
			for(int i = l; i < li*SZ; i++)
				ans[qi] += qu(max(1, i-t), i);

			for(int i = ri*SZ; i < r; i++)
				ans[qi] += qu(max(1, i-t), i);

			for(int i = li; i < ri; i++)
				ans[qi] += cursum[i];
		}
	}

	for(int i = 0; i < qs; i++)
		cout<<ans[i]<<'\n';
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1280 KB Output is correct
3 Correct 2 ms 1396 KB Output is correct
4 Correct 1 ms 1260 KB Output is correct
5 Correct 1 ms 1260 KB Output is correct
6 Correct 1 ms 1260 KB Output is correct
7 Correct 1 ms 1260 KB Output is correct
8 Correct 1 ms 1260 KB Output is correct
9 Correct 1 ms 1260 KB Output is correct
10 Correct 1 ms 1260 KB Output is correct
11 Correct 1 ms 1280 KB Output is correct
12 Correct 1 ms 1260 KB Output is correct
13 Correct 1 ms 1260 KB Output is correct
14 Correct 1 ms 1260 KB Output is correct
15 Correct 1 ms 1260 KB Output is correct
16 Correct 1 ms 1260 KB Output is correct
17 Correct 2 ms 1408 KB Output is correct
18 Correct 1 ms 1260 KB Output is correct
19 Correct 1 ms 1260 KB Output is correct
20 Correct 1 ms 1260 KB Output is correct
21 Correct 1 ms 1280 KB Output is correct
22 Correct 1 ms 1260 KB Output is correct
23 Correct 1 ms 1260 KB Output is correct
24 Correct 1 ms 1260 KB Output is correct
25 Correct 1 ms 1260 KB Output is correct
26 Correct 1 ms 1260 KB Output is correct
27 Correct 1 ms 1280 KB Output is correct
28 Correct 1 ms 1260 KB Output is correct
29 Correct 1 ms 1260 KB Output is correct
30 Correct 1 ms 1260 KB Output is correct
31 Correct 1 ms 1260 KB Output is correct
32 Correct 1 ms 1260 KB Output is correct

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 989 ms 50568 KB Output is correct
3 Execution timed out 1094 ms 49900 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 643 ms 49488 KB Output is correct
3 Correct 670 ms 48620 KB Output is correct
4 Correct 717 ms 50844 KB Output is correct
5 Correct 601 ms 49260 KB Output is correct
6 Correct 691 ms 49716 KB Output is correct
7 Correct 699 ms 49772 KB Output is correct
8 Correct 699 ms 49260 KB Output is correct
9 Correct 625 ms 49004 KB Output is correct
10 Correct 657 ms 48364 KB Output is correct
11 Correct 725 ms 50540 KB Output is correct
12 Correct 694 ms 50156 KB Output is correct
13 Correct 709 ms 50168 KB Output is correct
14 Correct 659 ms 49004 KB Output is correct
15 Correct 657 ms 50412 KB Output is correct
16 Correct 718 ms 50156 KB Output is correct

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1063 ms 46700 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1280 KB Output is correct
3 Correct 2 ms 1396 KB Output is correct
4 Correct 1 ms 1260 KB Output is correct
5 Correct 1 ms 1260 KB Output is correct
6 Correct 1 ms 1260 KB Output is correct
7 Correct 1 ms 1260 KB Output is correct
8 Correct 1 ms 1260 KB Output is correct
9 Correct 1 ms 1260 KB Output is correct
10 Correct 1 ms 1260 KB Output is correct
11 Correct 1 ms 1280 KB Output is correct
12 Correct 1 ms 1260 KB Output is correct
13 Correct 1 ms 1260 KB Output is correct
14 Correct 1 ms 1260 KB Output is correct
15 Correct 1 ms 1260 KB Output is correct
16 Correct 1 ms 1260 KB Output is correct
17 Correct 2 ms 1408 KB Output is correct
18 Correct 1 ms 1260 KB Output is correct
19 Correct 1 ms 1260 KB Output is correct
20 Correct 1 ms 1260 KB Output is correct
21 Correct 1 ms 1280 KB Output is correct
22 Correct 1 ms 1260 KB Output is correct
23 Correct 1 ms 1260 KB Output is correct
24 Correct 1 ms 1260 KB Output is correct
25 Correct 1 ms 1260 KB Output is correct
26 Correct 1 ms 1260 KB Output is correct
27 Correct 1 ms 1280 KB Output is correct
28 Correct 1 ms 1260 KB Output is correct
29 Correct 1 ms 1260 KB Output is correct
30 Correct 1 ms 1260 KB Output is correct
31 Correct 1 ms 1260 KB Output is correct
32 Correct 1 ms 1260 KB Output is correct
33 Correct 989 ms 50568 KB Output is correct
34 Execution timed out 1094 ms 49900 KB Time limit exceeded
35 Halted 0 ms 0 KB -